Motor-vehicle heater



Sept. 18, 1928. 1,684,672

D. HILL.

MOTOR VEHICLE HEATER Filed July '16, 1926 INVENTOIS. v 191% ATTORNEYS.

patented Sept. 31%,

smear DAVID HILL, OF WEST BABRINGTON, RHODE ISLAND.

MOTOR-VEHICLE HEATE1RL Application filed July is,

This invention relates to an improved heating system for the body of a motorve-" hicle; and has for its object to provide a. simple and effective device to'be connected to the exhaust conduit of a motor and ar ranged to draw cold. air from the .body of the vehicle tobe heated and returned-there into. The heating system is so inclosed as to exclude all exhaust gases and prevent F them from being passed thereby. into the body of the vehicle.

A further object ofthis invention is to provide a heat-conducting pipear'ranged to communicate with the body of the vehicle,

one end of the pipe being located. adjacent the exhaust conduit of the motor, and to mount a heat-directing element on the exhaust conduit '-to assist in heating the air and in inducing a circulation-through the Isystem, a portion of the' conductor v pipe being enclosed in a chamber which is, also. connected to the body of thecar to obtain cold air to be heated by circulating about the exhaust -conduitto subsequently flow back into the car through the heat-conduct;

ing pipe.

With these and other objects in view,the. invention consists in, certain novel features,

of construction, as will be more fully deappended claims.

In the accompanying drawings: I v Figure 1 is a fragmental section of a motor vehicle showing a portion of the body in' section anda portion ofthe engine with my exhaust conduit thereof. p v p I Figure 2 isanenlarged sectional view. of the heating system shown inFigure 1. Figure 3 is av detail in section showing the heat-directing element which is adapted to be. clamped to the exhaust conduit.

Figure 4 is amodification showing the heater as oonnected to the floor of a car to discharge its heat into the bodyv at a point in front of the front seat and having acold air supply pipe communicating with the body.

at a point to the re arof the front seat thus causing the heated air to circulate to. this point Figure 5 is a perspective view of the con/ 'strnctionshown in Figure 4. i

Figure 6 shows the coldair'chamber as formed in two parts and adapted to be clamped about the exhaust conduit. It is found in the heatingxof 'the bod' improved heating systemfappliedto thehave an open, .en

1926.. Serial No. 122,836.

T portion of an automobile that where the draws some of the. exhaust gases discharged from the exhaust pipe backinto the body,- also in traffic the gases from other adjacent cars is conducted into the body of the car,

which is very objectionable and injurious and renderspsuoh a heating system unpopular and sometimes dangerous. To ob viate this difficulty, and prevent these exhaust-outside gases from entering the heating system, I have provided a system closed to the outside a air, whereby the cold air tobe heated is drawn from the interior of the vehicle bodyu'in to a chamber formed about the exhaust conduit where this air is'heated and then directed'back through a 7 conductor pipe into-the body of the vehicle thus creating a continuous circulationwhich effectually excludes the exhaust gases; and the following'is a detailed description of the present embodiment of my invention showing means by which these advanta geous results may be obtained With reference to the drawings, 10 designates the motor and 11 the body of-the vehicle. An exhaust conduit '12 leading from the motor is shown extending down beneath the body of the car towards the rear thereof. ,As iswell known, the exhaust gases from thelnotor heatathis conduit to I a high temperature and in order to conduct-'9 some of this heat into the-[body of the vo hicle in a simple andpractical way," I have provided an outer chamber 13, whichis preferably formed in-two parts, the lower part letbeing arranged to telescope into the upper part 15 and each part being provided with aflanged portion 16 which isarranged/0o embrace hecondiiit ,12 and be secured 'in a position thereon by a clamp'collar ,17'which bindstheseupper and lower sections firmly onto the conduit. i

In some instances, the chamber 13 is supplied with cold air through the pipe 18 p which is arranged to communicate with the inside of the vehicle body 11, preferably I through the dash hoard thereof,for the purpose ofdrawing-the air therefrom, and as illustrated in Figures 1 and 2 a return or] hot air co'nductin pipe 19-is positioned to r d 20 in proximity to the motor exhaust conduit 12, its opposite end 21 communicating with theinterior of the" i 2 i I 1,684,672

body of the vehicle through the dash board at a point above the cold air intake.

In order to cause. a proper circulation of hot air through the conductor pipe, I have rovided a collar member '22 which is shown in Figure 3 as being split and adapted to be clamped-about the exhaust conduit 12 by bolts 23 and this collar is provided with a protuberance '24 which extends into the open end'of the conductor pipe 19, whereby this protuberance when heated serves to create a draft and induce a current of heated air up through the hot-air conducting pipe into the body of the vehicle, which air is supplied to the outer chamber 13 by the .pipe 18 from the body of the 7 vehicle, thus providing a circulating heating system closed to the outside air which is very effec- .tive in its operation and at the same time effectually excludes the exterior exhaust gases, which are being discharged both from its own exhaust ipe as well as those of other adjacent VGhIClGS.

, In some instances, it is found of advantage to mount the'heating system at a point adj went the engine and forward of the dash board of the body portion, while inother instances particularly where the car is of the double seated type, .it isv of advantage to mount the heatin system below the floor just'forwardpf't e front seat of the car, in which case the cold air'chamber may be a straight pipe 24 connected'to the under s'ide of'the floor 25 through a hole therein just forward of the front seat 26 and a heated air conducting pipe 28 may be positioned Within the outer ipe 24 to discharge the heated air at this polnt into the car, and

' in order to cause a proper circulation at a point back of the front seat, I have provided a cold air supplypipe 27 which 'is connected simple and through the floor just back of this 'front seat 7 26, which serves to draw the cold air from this point and induce a circulation of hot a1r.to this portion of the body, which has heretofore been found difiicult to heat.

vhaving a body and an exhaust conduit, comprising a conductor for heated air communieating at its upper end with the vehicle body fits" lower end being open and extend:

mg in proximity to said exhaust conduit,

an air heating and directing element mounted ln-contact with said conduit and having an upwardly extending tapering boss or protuberance extending into the open end of said conductor, and van outer-casing about the open end of said conductor having an air intakeiopening,

2. A heatlng system for a- -motor vehicle havinga body and'an exhaust -conduit, com- I prising a separablecasmg embrac ng said condu1t forming an -a1r chamber about the sameand having an air intake opening at a point above theconduit, a conductor for heated air communicating at its upper end with the vehicle body, its lower end being open and extending into said chamber and into proximity to said exhaust conduit, and an air heating and directing element mount ed on said' conduit and having a tapered boss or protuberance extending into said open lower end. v

In testimony whereof I aflix-my signature.

DAVID HILL. 

